Literary usage of Callunas

Below you will find example usage of this term as found in modern and/or classical literature:

1.Rhodora by New England Botanical Club (1908)"The Erica was found there in 1884 by Miss Susan Coffin and the Calluna in 1886
by Mr. Lawrence Coffin, but the size of the callunas showed that they must ..."

2.The Monthly Microscopical Journal: Transactions of the Royal Microscopical (1871)"... would be " Polyzoa "; and that at the next Ordinary Meeting, August 10th,
Mr.Wonfor would read a paper on "Is Bombyx callunas a variety or a species ? ..."